[U-Boot] [PATCH v4 1/6] davinci: ea20: reorganisation LCD startup

Bastian Ruppert
2012-09-14T08:28:59Z

Signed-off-by: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>
CC: Tom Rini <trini@ti.com>
Acked-by: Stefano Babic <sbabic@denx.de>
---
board/davinci/ea20/ea20.c | 23 +++++++++++++++--------
1 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c
index 7e00040..69307e4 100644
--- a/board/davinci/ea20/ea20.c
+++ b/board/davinci/ea20/ea20.c
@@ -176,6 +176,9 @@ int board_early_init_f(void)
if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
return 1;

+ /* Set DISP_ON high to enable LCD output*/
+ gpio_direction_output(97, 1);
+
/* Set the RESETOUTn low */
gpio_direction_output(111, 0);

@@ -188,9 +191,6 @@ int board_early_init_f(void)
/* Set LCD_B_PWR low to power down LCD Backlight*/
gpio_direction_output(102, 0);

- /* Set DISP_ON low to disable LCD output*/
- gpio_direction_output(97, 0);
-
#ifndef CONFIG_USE_IRQ
irq_init();
#endif
@@ -250,11 +250,6 @@ int board_early_init_f(void)
writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
&davinci_syscfg_regs->mstpri[2]);

- /* Set LCD_B_PWR low to power up LCD Backlight*/
- gpio_set_value(102, 1);
-
- /* Set DISP_ON low to disable LCD output*/
- gpio_set_value(97, 1);

return 0;
}
@@ -276,6 +271,9 @@ int board_init(void)

int board_late_init(void)
{
+ unsigned char buf[2];
+ int ret;
+
/* PinMux for HALTEN */
if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
return 1;
@@ -285,6 +283,15 @@ int board_late_init(void)

setenv("stdout", "serial");

+ /* Set fixed contrast settings for LCD via I2C potentiometer */
+ buf[0] = 0x00;
+ buf[1] = 0xd7;
+ ret = i2c_write(0x2e, 6, 1, buf, 2);
+ if (ret)
+ puts("\nContrast Settings FAILED\n");
+
+ /* Set LCD_B_PWR high to power up LCD Backlight*/
+ gpio_set_value(102, 1);
return 0;
}
#endif /* CONFIG_BOARD_LATE_INIT */
--
1.7.0.4